The OsmaDrain foul and surface water drainage system is designed for gravity drainage applications at depths of up to 10m. It is used to connect square or round rainwater pipes up to 70mm to a 110mm OsmaDrain socket or spigot. It can also connect to waste pipes ranging from 32mm to 50mm. This adaptor is suitable for external use only. The OsmaDrain range includes a wide variety of fittings, including bends, junctions, access fittings, and gullies. This universal drain adaptor connects 110mm pipes to 61mm square or 68mm round downpipes, connecting rain pipes to soil pipes.